Toric wide-angle lens

Abstract

The application relates to a complex curved wide-angle mirror lens, belonging to the technical field of vehicle rearview mirrors, which comprises a lens body, the lens body is divided into a main mirror surface area and a wide-angle surface area, the main mirror surface area and the wide-angle surface area are both curved surfaces, the curvature radius of the main mirror surface area is smaller than that of the wide-angle surface area, and the curvatures of the main mirror surface area and the wide-angle surface area in the transverse axis and longitudinal axis directions are both variably arranged. The application has the effect of facilitating the driver to stably obtain more road surface information.

Description

Technical Field

[0001] This application relates to the technical field of vehicle rearview mirrors, and in particular to a toric wide-angle lens. Background Technology

[0002] Most car rearview mirrors are flat mirrors. However, a single mirror has a limited field of vision, which cannot allow users to have a full understanding of the vehicle's surroundings and road conditions, thus posing certain safety hazards.

[0003] For rearview mirrors, the imaging effect is related to the radius of curvature of the mirror surface. Generally speaking, the larger the radius of curvature, the smaller the image distortion and the smaller the field of view; conversely, the smaller the radius of curvature, the greater the image distortion and the larger the field of view. Traditional methods for improving rearview mirrors often involve adding a small convex circular mirror to a single plane mirror. While this solves the problems of image distortion and field of view to some extent, it requires the driver to observe areas of different curvatures on the mirror surface, causing inconvenience for driving and judgment. Currently, some electronic rearview mirrors are in use and can achieve a wide-angle effect in terms of electrical functions, but they still have various problems, such as dependence on current, electromagnetic radiation interference in high-voltage magnetic field areas, and unstable video signal delays. These all pose significant hidden dangers to driving safety and can easily lead to traffic accidents.

[0004] Therefore, how to provide a rearview mirror lens that is stable and provides a good field of vision is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To facilitate drivers in obtaining more road information stably, this application provides a toroidal wide-angle lens.

[0006] This application provides a toroidal wide-angle lens, which adopts the following technical solution:

[0007] A toric wide-angle lens includes a lens body, which is divided into a main lens area and a wide-angle area. Both the main lens area and the wide-angle area are curved surfaces. The radius of curvature of the main lens area is greater than that of the wide-angle area. The curvature of the main lens area and the wide-angle area are varied in both the horizontal and vertical directions.

[0008] By adopting the above technical solutions, the wide-angle area has a smaller radius of curvature and a larger curvature, resulting in a wider field of view and greater image distortion. When in use, the wide-angle area is close to the driver's cab, and the larger field of view provides the driver with a greater view of the area around the vehicle, effectively reducing blind spots to the sides and rear wheels. Furthermore, observing the area around the vehicle only requires a simple judgment of whether there are obstructions, with minimal impact from image distortion, making it easier for the driver to stably obtain information about the vehicle's surroundings. The main mirror area has a larger radius of curvature and a smaller curvature, resulting in less image distortion. While the field of view is still increased due to the existing curvature, the increase is smaller compared to the main mirror area. This increased field of view provides the driver with a view of the vehicle's surroundings, and because of the minimal image distortion, the increased field of view does not affect the driver's accurate judgment of location. This effectively expands the driver's field of view, facilitating a stable acquisition of road conditions around the vehicle. The varying curvature along the horizontal and vertical axes effectively widens the overall field of view, allowing the driver to stably obtain more road information.

[0009] Preferably, the curved surface formed by the main mirror area and the curved surface formed by the wide-angle area are tangent at their intersection.

[0010] By adopting the above technical solution, the tangent intersection of the curved surface of the main lens area and the curved surface of the wide-angle area makes the overall lens transition smoothly, which can stably transition when the driver observes the lens image, making it easier for the driver to observe.

[0011] Preferably, the curvature of both the main mirror area and the wide-angle area changes gradually.

[0012] By adopting the above technical solution and using gradually set curvature, the image changes in a regular manner, making it easier for the driver to observe.

[0013] Preferably, the curvature of the main mirror area and the wide-angle area varies in a ring-like form in the horizontal, vertical and three-dimensional axial directions, respectively.

[0014] By adopting the above technical solution, the curvature of the converging ring changes, allowing the lens surface to present different smooth viewing angles, forming a converging ring reflection imaging, resulting in a clear and regular field of vision.

[0015] Preferably, a coating layer is provided on the surface of the lens body.

[0016] By adopting the above technical solution, the coating layer can reduce the intensity of reflected light and achieve the effect of scattering strong light.

[0017] Preferably, the coating layer covers the concave or convex surface of the lens body.

[0018] By adopting the above technical solutions, different types of coating layers can be adapted to different specifications of lenses, making it easier to meet the usage needs of lenses of different shapes.

[0019] Preferably, the coating layer is an electrochromic coating layer.

[0020] By adopting the above technical solution, and through the setting of the electrochromic coating layer, the electrochromic coating layer can make the optical properties of the coating layer undergo stable and reversible color changes under the application of an external electric field, thereby changing the optical characteristics, changing the intensity of reflected light, and reducing glare.

[0021] Preferably, the coating layer is a chromium, titanium, aluminum, silver, or blue mirror coating layer.

[0022] By adopting the above technical solution and setting chromium, titanium, aluminum, silver and blue mirror coating layers, the water repellency, self-cleaning and corrosion resistance of the glass are effectively increased, and light reflection is also effectively reduced.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By dividing the lens body into a main mirror area with a large radius of curvature and a wide-angle area with a small radius of curvature, the wide-angle area can provide the driver with a wider field of vision around the vehicle, thereby effectively reducing the problem of side blind spots and rear wheel blind spots when the driver observes. The main mirror area can provide the driver with a wider field of vision around the vehicle, effectively expanding the driver's observation range and making it easier for the driver to steadily obtain the road conditions around the vehicle.

[0025] 2. By varying the curvature of the primary mirror area and the wide-angle area in the three directions of horizontal, vertical and three-dimensional axis, the lens surface can present different smooth viewing angles, forming a ring reflection imaging, making the field of view clear and regular, and easy to observe;

[0026] 3. By setting the coating layer, the intensity of reflected light can be effectively reduced, thereby reducing glare and making it easier for the driver to see. Attached Figure Description

[0027] Figure 1 This is an axonometric schematic diagram of the main lens body structure in the embodiments of this application;

[0028] Figure 2 This is a side view schematic diagram that mainly illustrates the structure of the lens body in the embodiments of this application.

[0029] Attached image labels: 1. Lens body; 2. Main lens area; 3. Wide-angle area. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail.

[0031] This application discloses a toroidal wide-angle lens.

[0032] like Figure 1 As shown, a toric wide-angle lens includes a lens body 1, which is divided into a main lens area 2 and a wide-angle area 3. In this embodiment, the right side is the main lens area 2 and the left side is the wide-angle area 3. When in use, the driver is located on the left side and the wide-angle area 3 is close to the driver for use.

[0033] like Figure 1 and 2 As shown, both the main mirror area 2 and the wide-angle area 3 are curved surfaces, and the curvature of the main mirror area 2 and the wide-angle area 3 is gradually set. Specifically, the curvature of the main mirror area 2 and the wide-angle area 3 changes in a ring shape in the horizontal, vertical and three-dimensional axial directions, respectively. The ring shape means that the curvature on the same ring is the same. In actual use, the center point of the ring can be changed according to actual needs. Through the curvature of the ring shape, the lens surface can present different smooth viewing angles, thereby forming a ring reflection imaging, making the field of vision clear and regular, which is convenient for the driver to observe and process information.

[0034] like Figure 1 and 2 As shown, the curved intersection of the main mirror area 2 and the wide-angle area 3 is tangent. This design allows the driver to smoothly transition between the main mirror area 2 and the wide-angle area 3 when observing the lens body 1, facilitating stable acquisition of road information. Furthermore, since the curvature of the main mirror area 2 and the wide-angle area 3 varies along both the horizontal and vertical axes, it effectively increases the driver's lateral and longitudinal field of vision. Specifically, increasing the longitudinal field of vision makes it easier for the driver to observe the ground conditions, while increasing the lateral field of vision makes it easier for the driver to observe vehicles on the side. This magnifies the lens surface from different angles, making it easier for the driver to observe and increasing driving safety.

[0035] like Figure 1 and 2As shown, a coating layer (not shown in the figure) is deposited on the surface of the lens body 1. The coating layer can be deposited on the concave or convex surface of the lens body 1 according to actual needs. In this embodiment, the coating layer can be an electrochromic coating layer. The electrochromic coating layer can make the optical properties of the coating layer undergo stable and reversible color changes under an applied electric field, thereby changing the optical characteristics, changing the intensity of reflected light, and reducing glare. The coating layer can also be a chromium, titanium, aluminum, silver, or blue mirror coating layer. The use of chromium, titanium, aluminum, silver, or blue mirror coating can increase the water repellency, self-cleaning properties, and corrosion resistance of the glass, and can also effectively reflect light and reduce glare.

[0036] The implementation principle of this application embodiment is as follows: When put into actual use, the lens body 1 is divided into a main mirror area 2 and a wide-angle area 3. The wide-angle area 3 has a smaller radius of curvature, a larger field of view, and greater image distortion. When in use, the wide-angle area 3 is close to the driver's cab, and the larger field of view can provide the driver with a wider field of view around the vehicle, effectively reducing the problems of side blind spots and rear wheel ground blind spots when the driver observes. Moreover, observing the situation around the vehicle only requires a simple judgment of whether there are objects obstructing the view, and the impact of image distortion is small, making it easier for the driver to stably obtain the situation around the vehicle. The main mirror area 2 has a larger radius of curvature, less image distortion, and because curvature still exists, the field of view is still increased compared to a plane mirror, but the increase is relatively smaller. The wide-angle area 3 is relatively small, and the increased field of view provides the driver with a view of the vehicle's surroundings. Due to minimal image distortion, the increased field of view does not affect the driver's accurate judgment of location, effectively expanding the driver's field of view to observe the vehicle's surroundings and facilitating a stable acquisition of road conditions. Furthermore, since the curvature of both the main mirror area 2 and the wide-angle area 3 is varied along the horizontal and vertical axes, it effectively increases the driver's horizontal and vertical field of view. The curvature of the main mirror area 2 and the wide-angle area 3 varies in a ring-shaped manner in the horizontal, vertical, and three-dimensional axial directions, and the lens body 1 is coated as a whole, which allows the lens to converge the field of view and scatter strong light, effectively reducing glare for the driver.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A toroidal wide-angle lens, characterized in that: The lens body (1) is divided into a main lens area (2) and a wide-angle area (3). Both the main lens area (2) and the wide-angle area (3) are curved surfaces. The radius of curvature of the main lens area (2) is greater than that of the wide-angle area (3). The curvature of the main lens area (2) and the wide-angle area (3) are varied in the horizontal and vertical directions.

2. The toric wide-angle lens according to claim 1, characterized in that: The curved surface formed by the main mirror area (2) and the curved surface formed by the wide-angle area (3) are tangent at the intersection.

3. A toric wide-angle lens according to claim 1, characterized in that: The curvature of both the main mirror area (2) and the wide-angle area (3) changes gradually.

4. A toric wide-angle lens according to claim 3, characterized in that: The curvature of the main mirror area (2) and the wide-angle area (3) varies in a ring-like form in the horizontal, vertical and three-dimensional axial directions, respectively.

5. A toric wide-angle lens according to claim 1, characterized in that: A coating layer is provided on the surface of the lens body (1).

6. A toric wide-angle lens according to claim 5, characterized in that: The coating layer covers the concave or convex surface of the lens body (1).

7. A toric wide-angle lens according to claim 5, characterized in that: The coating layer is an electrochromic coating layer.

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